// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 22.1.1
description: Subclassing Array
info: |
  22.1.1 The Array Constructor

  The Array constructor is designed to be subclassable. It may be used as the
  value of an extends clause of a class definition. (...)
includes: [compareArray.js]
---*/

function Test() {
    class Sub extends Array {}

    var a1 = new Sub(42, 'foo');

    assert.sameValue(a1.length, 2);
    assert.sameValue(a1[0], 42);
    assert.sameValue(a1[1], 'foo');

    a1.push(true);
    assert.sameValue(a1.length, 3, 'Array#push updates the length property');
    assert.sameValue(a1[0], 42);
    assert.sameValue(a1[1], 'foo');
    assert.sameValue(a1[2], true, 'Adds new item');

    var a2 = new Sub(7);
    assert.sameValue(a2.length, 7);

    var a3 = new Sub();
    assert.compareArray(a3, []);
    assert.sameValue(a3.length, 0);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
